/***************************************************************************
 *   Copyright (C) 2009 	by Kashyap R Puranik, kashthealien@gmail.com   *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
 ***************************************************************************/

#include "calculator.h"

#include <kdebug.h>
#include <kactioncollection.h>
#include <kstandardaction.h>
#include <kstandarddirs.h>
#include <ktoolinvocation.h>

calculator :: calculator(QWidget *parent)
        : KDialog(parent)
{
    setCaption(i18n("Molecular Calculator"));
    setButtons(Help | Close);
    setDefaultButton(Close);

    ui.setupUi(mainWidget());

    // Add the nuclear calculator to the user interface
    m_nuclearCalculator = new nuclearCalculator(this);
    ui.stack->addWidget(m_nuclearCalculator);
    // Add the gas calculator to the user interface
    m_gasCalculator = new gasCalculator(this);
    ui.stack->addWidget(m_gasCalculator);
    // Add the concentration calculator to the user interface
    m_concCalculator = new concCalculator(this);
    ui.stack->addWidget(m_concCalculator);

    // Add the molecular mass Calculator widget to the user interface
    m_moleCalculator = new MolcalcWidget(this);
    ui.stack->addWidget(m_moleCalculator);
    // Add the molecular mass Calculator widget to the user interface

#ifdef HAVE_FACILE
    // Add the equation balancer widget to the user interface
    new QTreeWidgetItem(ui.tree);
    QTreeWidgetItem *___qtreewidgetitem6 = ui.tree->topLevelItem(5);
    ___qtreewidgetitem6->setText(0, i18n("Equation Balancer", 0));

    m_equationBalancer = new EQChemDialog(this);
    ui.stack->addWidget(m_equationBalancer);
#endif
    // Add an image to the file
    ui.pic->setPixmap( (KIcon( "calculate" )).pixmap(128,128) );

    // Connect the tree item selection signal to the corresponding slot
    connect(ui.tree, SIGNAL(itemClicked(QTreeWidgetItem * , int)), this,
            SLOT(slotItemSelection(QTreeWidgetItem *)));

    ui.tree->setCurrentItem ( ui.tree->topLevelItem(0), 0, QItemSelectionModel::ToggleCurrent );

    // help clicked
    connect( this, SIGNAL( helpClicked() ), this, SLOT( slotHelp() ) );
}

calculator :: ~calculator()
{

}

void calculator :: slotItemSelection(QTreeWidgetItem *item)
{
    if (item == 0L) return;

    //DEBUG
    kDebug() << "Item clicked: " << item->text(0);

    QString s = item->text(0);

    if (!(s.compare(i18n("Introduction"))))
        ui.stack->setCurrentWidget(ui.intro);
    // Check if nuclear calculator is selected, show the widget in the user interface
    else if (!(s.compare(i18n("Nuclear Calculator"))))
        ui.stack->setCurrentWidget(m_nuclearCalculator);

    // Check if gas calculator is selected, show the widget in the user interface
    else if (!(s.compare(i18n("Gas Calculator"))))
        ui.stack->setCurrentWidget(m_gasCalculator);

    // Check if the concentration calculator is selected, sho the widget in the UI if yes
    else if (!(s.compare(i18n("Concentration Calculator"))))
        ui.stack->setCurrentWidget(m_concCalculator);

    // The equation balancer needs FACILE library, if its present HAVE_FACILE = 1
    // If the equation balancer was selected, open it in the UI.
#ifdef HAVE_FACILE
    else if (!(s.compare(i18n("Equation Balancer"))))
        ui.stack->setCurrentWidget(m_equationBalancer);
#endif
    else if (!(s.compare(i18n("Molecular mass Calculator"))))
        ui.stack->setCurrentWidget(m_moleCalculator);
}


void calculator::slotHelp()
{
    KToolInvocation::invokeHelp( "calculator", "kalzium" );
}

